.biWrap{
    height: 100%;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
}
.biTree{
    width: 250px;
    height: 100%;
    overflow-y: auto;
}
.none{
  color:red;
}
.bicontent{
    flex:1;
    height: 100%;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  overflow-y: auto;

}
